UEE – An Electrical Solutions Company printed in Canada page 1 of 2 Primary Supply Section As the incoming primary supply is designed for feed-through operation, the Pit Dewatering Substation connects as a single drop on a daisy-chained network of high-voltage equipment. Incoming and outgoing feeds are connected through UEE quick-connect flanges that utilize trailing cable pilot monitoring for safety. Monitoring and supply switching are provided by upstream equipment. Termination covers are provided to validate pilot circuit for non-feed- through operation. The trailing cable pilot circuit passes through an emergency kill switch that in turn is connected to all high-voltage doors, ensuring that the supply voltage is disconnected whenever the substation is being maintained. The current limiting fuses in the primary supply section are rated for and protect the specific transformer installed in the substation. Step-down voltage conversion is handled by a dry-type mine duty transformer equipped with a neutral grounding resistor (NGR). UEE Pit Dewatering Substation The UEE Pit Dewatering Substation brings reliable, configurable and efficient power conversion and distribution to remote industrial settings in an extremely durable and mobile package that handles primary switching, step-down voltage conversion and secondary distribution. Load specific modular feeders handle secondary distribution and can easily be swapped out to accommodate changing distribution needs. Welded to HSS steel, the body is manufactured from 11ga steel and is coated with a durable powder-coat finish. The enclosure provides NEMA 3R protection for internal components. Substation: Pit Dewatering Power Distribution Secondary Distribution The secondary distribution compartment is physically isolated from the rest of the substation and accommodates up to six plug-in modular feeders which connect to the low-voltage bus. Plug-in feeders provide a high degree of operational safety and flexibility, yet require limited maintenance down-time. Each interchangeable modular feeder has its own control and protection systems, and can be configured for a wide range of components including breaker feeders and motor and pump controllers. Refer to the Typical Specification tables for feeder options.